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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 20, Iss. 10 — Oct. 1, 2003
  • pp: 2031–2036

Coupling efficiency effects of launching a fringe pattern into a single-mode optical fiber

M. Kamel Amara and Noureddine Melikechi  »View Author Affiliations

JOSA B, Vol. 20, Issue 10, pp. 2031-2036 (2003)

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We discuss the effects on coupling efficiency of launching an optical fringe pattern into a single-mode optical fiber. We show that under some circumstances, coupling efficiencies of ∼90% can be obtained by the launching of the central fringe of a two-beam interference pattern into the fiber. Theoretical calculations based on mode overlapping integrals show that, compared with commonly used coupling schemes, it is possible to improve greatly the coupling efficiency into an optical fiber. By using a He-Ne laser operating at 633 nm and an optical fiber with a mode field diameter of 3.3 μm and N.A. of 0.16, we have obtained a coupling efficiency of ∼91% at an interfering half-angle of ∼60 mrad, in good agreement with our theoretical predictions.

© 2003 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(220.2560) Optical design and fabrication : Propagating methods

M. Kamel Amara and Noureddine Melikechi, "Coupling efficiency effects of launching a fringe pattern into a single-mode optical fiber," J. Opt. Soc. Am. B 20, 2031-2036 (2003)

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